Counties in South Carolina by uninsured rate, ages 18 to 64 (US model-based estimate)

Jasper County had the highest uninsured rate, ages 18 to 64 (US model-based estimate) of 46 counties in 2019, at 23.3%. McCormick County had the lowest, at 13.4%. The median was 15.9% and the figure for South Carolina was 16%. Source: the U.S. Census Bureau.

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Highest23.3Jasper County
Median15.946 counties
South Carolina16History

Map of counties, 2019

Abbeville County: 16.5 %Aiken County: 16.1 %Allendale County: 13.5 %Anderson County: 15.7 %Bamberg County: 15.3 %Barnwell County: 14.5 %Beaufort County: 16.7 %Berkeley County: 14.7 %Calhoun County: 15.1 %Charleston County: 15 %Cherokee County: 16.9 %Chester County: 15.2 %Chesterfield County: 18.2 %Clarendon County: 17.7 %Colleton County: 18.7 %Darlington County: 15.9 %Dillon County: 21.4 %Dorchester County: 14.2 %Edgefield County: 15.9 %Fairfield County: 14.2 %Florence County: 15.6 %Georgetown County: 16.9 %Greenville County: 16.3 %Greenwood County: 17.8 %Hampton County: 16.4 %Horry County: 21.6 %Jasper County: 23.3 %Kershaw County: 15.1 %Lancaster County: 14.3 %Laurens County: 17.1 %Lee County: 15.1 %Lexington County: 15 %McCormick County: 13.4 %Marion County: 16.9 %Marlboro County: 17.6 %Newberry County: 18 %Oconee County: 17.6 %Orangeburg County: 16.2 %Pickens County: 15.6 %Richland County: 13.7 %Saluda County: 21.1 %Spartanburg County: 15.5 %Sumter County: 15.7 %Union County: 15.4 %Williamsburg County: 17.1 %York County: 14.3 %
  • Under 15
  • 15 to 16
  • 16 to 17
  • 17 to 18
  • 18 and over
%, 2019. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2019

Jasper County: 23.3 %Jasper County23.3Horry County: 21.6 %Horry County21.6Dillon County: 21.4 %Dillon County21.4Saluda County: 21.1 %Saluda County21.1Colleton County: 18.7 %Colleton County18.7Chesterfield County: 18.2 %Chesterfield County18.2Newberry County: 18 %Newberry County18Greenwood County: 17.8 %Greenwood County17.8Clarendon County: 17.7 %Clarendon County17.7Marlboro County: 17.6 %Marlboro County17.6Oconee County: 17.6 %Oconee County17.6Laurens County: 17.1 %Laurens County17.1Williamsburg County: 17.1 %Williamsburg County17.1Cherokee County: 16.9 %Cherokee County16.9Georgetown County: 16.9 %Georgetown County16.9Marion County: 16.9 %Marion County16.9Beaufort County: 16.7 %Beaufort County16.7Abbeville County: 16.5 %Abbeville County16.5Hampton County: 16.4 %Hampton County16.4Greenville County: 16.3 %Greenville County16.3Orangeburg County: 16.2 %Orangeburg County16.2Aiken County: 16.1 %Aiken County16.1Darlington County: 15.9 %Darlington County15.9Edgefield County: 15.9 %Edgefield County15.9Anderson County: 15.7 %Anderson County15.7Sumter County: 15.7 %Sumter County15.7Florence County: 15.6 %Florence County15.6Pickens County: 15.6 %Pickens County15.6Spartanburg County: 15.5 %Spartanburg County15.5Union County: 15.4 %Union County15.4Bamberg County: 15.3 %Bamberg County15.3Chester County: 15.2 %Chester County15.2Calhoun County: 15.1 %Calhoun County15.1Kershaw County: 15.1 %Kershaw County15.1Lee County: 15.1 %Lee County15.1Charleston County: 15 %Charleston County15Lexington County: 15 %Lexington County15Berkeley County: 14.7 %Berkeley County14.7Barnwell County: 14.5 %Barnwell County14.5Lancaster County: 14.3 %Lancaster County14.3York County: 14.3 %York County14.3Dorchester County: 14.2 %Dorchester County14.2Fairfield County: 14.2 %Fairfield County14.2Richland County: 13.7 %Richland County13.7Allendale County: 13.5 %Allendale County13.5McCormick County: 13.4 %McCormick County13.4Jasper County: 23.3 %Jasper County23.3Horry County: 21.6 %Horry County21.6Dillon County: 21.4 %Dillon County21.4Saluda County: 21.1 %Saluda County21.1Colleton County: 18.7 %Colleton County18.7Chesterfield County: 18.2 %Chesterfield County18.2Newberry County: 18 %Newberry County18Greenwood County: 17.8 %Greenwood County17.8Clarendon County: 17.7 %Clarendon County17.7Marlboro County: 17.6 %Marlboro County17.6Oconee County: 17.6 %Oconee County17.6Laurens County: 17.1 %Laurens County17.1Williamsburg County: 17.1 %Williamsburg County17.1Cherokee County: 16.9 %Cherokee County16.9Georgetown County: 16.9 %Georgetown County16.9Marion County: 16.9 %Marion County16.9Beaufort County: 16.7 %Beaufort County16.7Abbeville County: 16.5 %Abbeville County16.5Hampton County: 16.4 %Hampton County16.4Greenville County: 16.3 %Greenville County16.3Orangeburg County: 16.2 %Orangeburg County16.2Aiken County: 16.1 %Aiken County16.1Darlington County: 15.9 %Darlington County15.9Edgefield County: 15.9 %Edgefield County15.9Anderson County: 15.7 %Anderson County15.7Sumter County: 15.7 %Sumter County15.7Florence County: 15.6 %Florence County15.6Pickens County: 15.6 %Pickens County15.6Spartanburg County: 15.5 %Spartanburg County15.5Union County: 15.4 %Union County15.4Bamberg County: 15.3 %Bamberg County15.3Chester County: 15.2 %Chester County15.2Calhoun County: 15.1 %Calhoun County15.1Kershaw County: 15.1 %Kershaw County15.1Lee County: 15.1 %Lee County15.1Charleston County: 15 %Charleston County15Lexington County: 15 %Lexington County15Berkeley County: 14.7 %Berkeley County14.7Barnwell County: 14.5 %Barnwell County14.5Lancaster County: 14.3 %Lancaster County14.3York County: 14.3 %York County14.3Dorchester County: 14.2 %Dorchester County14.2Fairfield County: 14.2 %Fairfield County14.2Richland County: 13.7 %Richland County13.7Allendale County: 13.5 %Allendale County13.5McCormick County: 13.4 %McCormick County13.4
%. Source: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Full ranking

RankCounties2019 (%)Change on 2018
1Jasper County23.3-2 pts
2Horry County21.6+0.7 pts
3Dillon County21.4+2.1 pts
4Saluda County21.1-2.3 pts
5Colleton County18.7+1.3 pts
6Chesterfield County18.2+0.6 pts
7Newberry County18+0.1 pts
8Greenwood County17.8+0.4 pts
9Clarendon County17.7-0.4 pts
10Marlboro County17.6+1.2 pts
10Oconee County17.6-1.4 pts
12Laurens County17.1-0.7 pts
12Williamsburg County17.1+2 pts
14Cherokee County16.9+0.6 pts
14Georgetown County16.9+0.2 pts
14Marion County16.9-0.5 pts
17Beaufort County16.7+0.1 pts
18Abbeville County16.5-0.7 pts
19Hampton County16.4+1.3 pts
20Greenville County16.3-0.9 pts
21Orangeburg County16.2+0.1 pts
22Aiken County16.1+0.6 pts
23Darlington County15.9+0.2 pts
23Edgefield County15.9-0.5 pts
25Anderson County15.7+0.2 pts
25Sumter County15.7-0.3 pts
27Florence County15.60 pts
27Pickens County15.6-0.6 pts
29Spartanburg County15.5-0.1 pts
30Union County15.4+0.8 pts
31Bamberg County15.3-0.7 pts
32Chester County15.2+0.7 pts
33Calhoun County15.1-1.2 pts
33Kershaw County15.1+0.4 pts
33Lee County15.1+0.3 pts
36Charleston County15+2 pts
36Lexington County15+0.6 pts
38Berkeley County14.7-0.2 pts
39Barnwell County14.5-0.6 pts
40Lancaster County14.3-0.9 pts
40York County14.3+1.9 pts
42Dorchester County14.2+1 pts
42Fairfield County14.2-0.7 pts
44Richland County13.7+0.4 pts
45Allendale County13.5+0.2 pts
46McCormick County13.4-1.3 pts

Other periods

About this ranking

People aged 18 to 64 without health insurance coverage of any kind, as a percentage of all people aged 18 to 64. United States: Census Bureau Small Area Health Insurance Estimates (SAHIE) for states and counties, all races, both sexes and all income levels.

A model-based single-year estimate that combines the American Community Survey with administrative records and population estimates, so every county gets a figure. Covers states and counties only, because the SAHIE dataset files have no national row. The Census Bureau advises comparing years from 2008 on only; 2013 is the updated release. Working-age adults; the rate for everyone under 65 is uninsured_rate_under_65.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties (Counties in South Carolina by uninsured rate, ages 18 to 64 (US model-based estimate), 2019) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip

MLA 9

Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties, Counties in South Carolina by uninsured rate, ages 18 to 64 (US model-based estimate), 2019. U.S. Census Bureau, 6 Aug. 2026, https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip. Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-carolina-counties?period=2019. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Counties in South Carolina by uninsured rate, ages 18 to 64 (US model-based estimate), 2019. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip. Also distributed by Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-carolina-counties?period=2019.

Harvard

U.S. Census Bureau (2026) Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties, Counties in South Carolina by uninsured rate, ages 18 to 64 (US model-based estimate), 2019 [Dataset]. Available at: https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip, via Invokely: https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-carolina-counties?period=2019 (Accessed: 12 October 2026).

BibTeX
@misc{census_counties_in_south_carolina_2019,
  author = {{U.S. Census Bureau}},
  title = {{Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties: Counties in South Carolina by uninsured rate, ages 18 to 64 (US model-based estimate), 2019}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-carolina-counties?period=2019. Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties: Counties in South Carolina by uninsured rate, ages 18 to 64 (US model-based estimate), 2019
PY  - 2026
DA  - 2026/08/06
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip
L2  - https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-carolina-counties?period=2019
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/uninsured-rate-ages-18-64/south-carolina-counties?period=2019.
N1  - Publisher attribution: U.S. Census Bureau. Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. https://www2.census.gov/programs-surveys/sahie/datasets/time-series/estimates-acs/sahie-2019-csv.zip. Retrieved 2026-10-12.
ER  - 
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Questions

Which county has the highest uninsured rate, ages 18 to 64 (US model-based estimate)?

Jasper County, with 23.3% in 2019, according to the U.S. Census Bureau.

Which county has the lowest uninsured rate, ages 18 to 64 (US model-based estimate)?

McCormick County, with 13.4% in 2019.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Small Area Health Insurance Estimates (SAHIE): percent uninsured, ages 18 to 64, all races, both sexes, all income levels, states and counties. Retrieved 2026-10-12.

Uninsured rate, ages 18 to 64 (US model-based estimate): other rankings

Counties in South Carolina: more rankings